Trump immediately imposed sanctions on Iran, while Iran president Hassan Rouhani declared the country will enrich uranium "more than before" if negotiations fail in response to the U.S. withdrawing.

President Trump ignored the advice.

Still, Rouhani made a point of stressing that Iran, at any time, could resume its nuclear program. Riyadh's statement, which came less than an hour after Mr Trump's decision, said it "supports and welcomes" the United States decision.

"I hope that all other parties to the agreement, including Iran but also the European Union and others, will continue to implement the agreement".

"Iran will not violate the nuclear deal, but if the United States withdraws from the deal, they will surely regret it. If they do there will be very severe outcome".

While U.S. flag-burning is common in Iran and harsh criticism of America has been a staple of Iranian parliamentary politics for years, it was the first time political observers could remember anything being burned inside the parliament itself. One of the main topics of Macron's trip to Russian Federation in May will be the Iran nuclear deal. If US officials are troubled by Iran's foreign policy now, imagine how much more powerful a nuclear-armed Iran would be. "I have ordered the foreign ministry to negotiate with the European countries, China and Russian Federation in coming weeks".